X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fregex.m4;h=0089c08e999711ac6c726bd9e94e6f6590c5ce90;hb=5068051817bc09c088f31d3627956bfe5086b130;hp=656cef76e4a0372fa3f1ebd055af8f3aaccd7003;hpb=90f8d0d3e4ce4b1f4118d35eba6a051558323ace;p=gnulib.git diff --git a/m4/regex.m4 b/m4/regex.m4 index 656cef76e..0089c08e9 100644 --- a/m4/regex.m4 +++ b/m4/regex.m4 @@ -1,7 +1,6 @@ -#serial 50 +# serial 65 -# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005, -# 2006, 2007, 2008 Free Software Foundation, Inc. +# Copyright (C) 1996-2001, 2003-2013 Free Software Foundation, Inc. # # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, @@ -14,153 +13,209 @@ AC_PREREQ([2.50]) AC_DEFUN([gl_REGEX], [ - AC_CHECK_HEADERS_ONCE([locale.h]) - AC_ARG_WITH([included-regex], [AS_HELP_STRING([--without-included-regex], - [don't compile regex; this is the default on 32-bit - systems with recent-enough versions of the GNU C - Library (use with caution on other systems). - On systems with 64-bit ptrdiff_t and 32-bit int, - --with-included-regex is the default, in case - regex functions operate on very long strings (>2GB)])]) + [don't compile regex; this is the default on systems + with recent-enough versions of the GNU C Library + (use with caution on other systems).])]) case $with_included_regex in #( yes|no) ac_use_included_regex=$with_included_regex - ;; + ;; '') # If the system regex support is good enough that it passes the # following run test, then default to *not* using the included regex.c. # If cross compiling, assume the test would fail and use the included # regex.c. + AC_CHECK_DECLS_ONCE([alarm]) + AC_CHECK_HEADERS_ONCE([malloc.h]) AC_CACHE_CHECK([for working re_compile_pattern], - [gl_cv_func_re_compile_pattern_working], + [gl_cv_func_re_compile_pattern_working], [AC_RUN_IFELSE( - [AC_LANG_PROGRAM( - [AC_INCLUDES_DEFAULT - #if HAVE_LOCALE_H - #include - #endif - #include - #include - ], - [[static struct re_pattern_buffer regex; - unsigned char folded_chars[UCHAR_MAX + 1]; - int i; - const char *s; - struct re_registers regs; - - #if HAVE_LOCALE_H - /* http://sourceware.org/ml/libc-hacker/2006-09/msg00008.html - This test needs valgrind to catch the bug on Debian - GNU/Linux 3.1 x86, but it might catch the bug better - on other platforms and it shouldn't hurt to try the - test here. */ - if (setlocale (LC_ALL, "en_US.UTF-8")) - { - static char const pat[] = "insert into"; - static char const data[] = - "\xFF\0\x12\xA2\xAA\xC4\xB1,K\x12\xC4\xB1*\xACK"; - re_set_syntax (RE_SYNTAX_GREP | RE_HAT_LISTS_NOT_NEWLINE - | RE_ICASE); - memset (®ex, 0, sizeof regex); - s = re_compile_pattern (pat, sizeof pat - 1, ®ex); - if (s) - return 1; - if (re_search (®ex, data, sizeof data - 1, - 0, sizeof data - 1, ®s) - != -1) - return 1; - if (! setlocale (LC_ALL, "C")) - return 1; - } - #endif - - /* This test is from glibc bug 3957, reported by Andrew Mackey. */ - re_set_syntax (RE_SYNTAX_EGREP | RE_HAT_LISTS_NOT_NEWLINE); - memset (®ex, 0, sizeof regex); - s = re_compile_pattern ("a[^x]b", 6, ®ex); - if (s) - return 1; - - /* This should fail, but succeeds for glibc-2.5. */ - if (re_search (®ex, "a\nb", 3, 0, 3, ®s) != -1) - return 1; - - /* This regular expression is from Spencer ere test number 75 - in grep-2.3. */ - re_set_syntax (RE_SYNTAX_POSIX_EGREP); - memset (®ex, 0, sizeof regex); - for (i = 0; i <= UCHAR_MAX; i++) - folded_chars[i] = i; - regex.translate = folded_chars; - s = re_compile_pattern ("a[[:@:>@:]]b\n", 11, ®ex); - /* This should fail with _Invalid character class name_ error. */ - if (!s) - return 1; - - /* This should succeed, but does not for glibc-2.1.3. */ - memset (®ex, 0, sizeof regex); - s = re_compile_pattern ("{1", 2, ®ex); - - if (s) - return 1; - - /* The following example is derived from a problem report - against gawk from Jorge Stolfi . */ - memset (®ex, 0, sizeof regex); - s = re_compile_pattern ("[an\371]*n", 7, ®ex); - if (s) - return 1; - - /* This should match, but does not for glibc-2.2.1. */ - if (re_match (®ex, "an", 2, 0, ®s) != 2) - return 1; - - memset (®ex, 0, sizeof regex); - s = re_compile_pattern ("x", 1, ®ex); - if (s) - return 1; - - /* glibc-2.2.93 does not work with a negative RANGE argument. */ - if (re_search (®ex, "wxy", 3, 2, -2, ®s) != 1) - return 1; - - /* The version of regex.c in older versions of gnulib - ignored RE_ICASE. Detect that problem too. */ - re_set_syntax (RE_SYNTAX_EMACS | RE_ICASE); - memset (®ex, 0, sizeof regex); - s = re_compile_pattern ("x", 1, ®ex); - if (s) - return 1; - - if (re_search (®ex, "WXY", 3, 0, 3, ®s) < 0) - return 1; - - /* Catch a bug reported by Vin Shelton in - http://lists.gnu.org/archive/html/bug-coreutils/2007-06/msg00089.html - */ - re_set_syntax (RE_SYNTAX_POSIX_BASIC - & ~RE_CONTEXT_INVALID_DUP - & ~RE_NO_EMPTY_RANGES); - memset (®ex, 0, sizeof regex); - s = re_compile_pattern ("[[:alnum:]_-]\\\\+$", 16, ®ex); - if (s) - return 1; - - /* REG_STARTEND was added to glibc on 2004-01-15. - Reject older versions. */ - if (! REG_STARTEND) - return 1; - - /* Reject hosts whose regoff_t values are too narrow. - These include glibc 2.3.5 on hosts with 64-bit ptrdiff_t - and 32-bit int. */ - if (sizeof (regoff_t) < sizeof (ptrdiff_t) - || sizeof (regoff_t) < sizeof (ssize_t)) - return 1; - - return 0;]])], + [AC_LANG_PROGRAM( + [[#include + + #include + #include + #include + #if HAVE_DECL_ALARM + # include + # include + #endif + #if HAVE_MALLOC_H + # include + #endif + ]], + [[int result = 0; + static struct re_pattern_buffer regex; + unsigned char folded_chars[UCHAR_MAX + 1]; + int i; + const char *s; + struct re_registers regs; + + /* Some builds of glibc go into an infinite loop on this + test. Use alarm to force death, and mallopt to avoid + malloc recursion in diagnosing the corrupted heap. */ +#if HAVE_DECL_ALARM + signal (SIGALRM, SIG_DFL); + alarm (2); +#endif +#ifdef M_CHECK_ACTION + mallopt(M_CHECK_ACTION, 2); +#endif + + if (setlocale (LC_ALL, "en_US.UTF-8")) + { + { + /* http://sourceware.org/ml/libc-hacker/2006-09/msg00008.html + This test needs valgrind to catch the bug on Debian + GNU/Linux 3.1 x86, but it might catch the bug better + on other platforms and it shouldn't hurt to try the + test here. */ + static char const pat[] = "insert into"; + static char const data[] = + "\xFF\0\x12\xA2\xAA\xC4\xB1,K\x12\xC4\xB1*\xACK"; + re_set_syntax (RE_SYNTAX_GREP | RE_HAT_LISTS_NOT_NEWLINE + | RE_ICASE); + memset (®ex, 0, sizeof regex); + s = re_compile_pattern (pat, sizeof pat - 1, ®ex); + if (s) + result |= 1; + else if (re_search (®ex, data, sizeof data - 1, + 0, sizeof data - 1, ®s) + != -1) + result |= 1; + } + + { + /* This test is from glibc bug 15078. + The test case is from Andreas Schwab in + . + */ + static char const pat[] = "[^x]x"; + static char const data[] = + /* */ + "\xe1\x80\x80" + "\xe1\x80\xbb" + "\xe1\x80\xbd" + "\xe1\x80\x94" + "\xe1\x80\xba" + "\xe1\x80\xaf" + "\xe1\x80\x95" + "\xe1\x80\xba" + "x"; + re_set_syntax (0); + memset (®ex, 0, sizeof regex); + s = re_compile_pattern (pat, sizeof pat - 1, ®ex); + if (s) + result |= 1; + else + { + i = re_search (®ex, data, sizeof data - 1, + 0, sizeof data - 1, 0); + if (i != 0 && i != 21) + result |= 1; + } + } + + if (! setlocale (LC_ALL, "C")) + return 1; + } + + /* This test is from glibc bug 3957, reported by Andrew Mackey. */ + re_set_syntax (RE_SYNTAX_EGREP | RE_HAT_LISTS_NOT_NEWLINE); + memset (®ex, 0, sizeof regex); + s = re_compile_pattern ("a[^x]b", 6, ®ex); + if (s) + result |= 2; + /* This should fail, but succeeds for glibc-2.5. */ + else if (re_search (®ex, "a\nb", 3, 0, 3, ®s) != -1) + result |= 2; + + /* This regular expression is from Spencer ere test number 75 + in grep-2.3. */ + re_set_syntax (RE_SYNTAX_POSIX_EGREP); + memset (®ex, 0, sizeof regex); + for (i = 0; i <= UCHAR_MAX; i++) + folded_chars[i] = i; + regex.translate = folded_chars; + s = re_compile_pattern ("a[[:@:>@:]]b\n", 11, ®ex); + /* This should fail with _Invalid character class name_ error. */ + if (!s) + result |= 4; + + /* Ensure that [b-a] is diagnosed as invalid, when + using RE_NO_EMPTY_RANGES. */ + re_set_syntax (RE_SYNTAX_POSIX_EGREP | RE_NO_EMPTY_RANGES); + memset (®ex, 0, sizeof regex); + s = re_compile_pattern ("a[b-a]", 6, ®ex); + if (s == 0) + result |= 8; + + /* This should succeed, but does not for glibc-2.1.3. */ + memset (®ex, 0, sizeof regex); + s = re_compile_pattern ("{1", 2, ®ex); + if (s) + result |= 8; + + /* The following example is derived from a problem report + against gawk from Jorge Stolfi . */ + memset (®ex, 0, sizeof regex); + s = re_compile_pattern ("[an\371]*n", 7, ®ex); + if (s) + result |= 8; + /* This should match, but does not for glibc-2.2.1. */ + else if (re_match (®ex, "an", 2, 0, ®s) != 2) + result |= 8; + + memset (®ex, 0, sizeof regex); + s = re_compile_pattern ("x", 1, ®ex); + if (s) + result |= 8; + /* glibc-2.2.93 does not work with a negative RANGE argument. */ + else if (re_search (®ex, "wxy", 3, 2, -2, ®s) != 1) + result |= 8; + + /* The version of regex.c in older versions of gnulib + ignored RE_ICASE. Detect that problem too. */ + re_set_syntax (RE_SYNTAX_EMACS | RE_ICASE); + memset (®ex, 0, sizeof regex); + s = re_compile_pattern ("x", 1, ®ex); + if (s) + result |= 16; + else if (re_search (®ex, "WXY", 3, 0, 3, ®s) < 0) + result |= 16; + + /* Catch a bug reported by Vin Shelton in + http://lists.gnu.org/archive/html/bug-coreutils/2007-06/msg00089.html + */ + re_set_syntax (RE_SYNTAX_POSIX_BASIC + & ~RE_CONTEXT_INVALID_DUP + & ~RE_NO_EMPTY_RANGES); + memset (®ex, 0, sizeof regex); + s = re_compile_pattern ("[[:alnum:]_-]\\\\+$", 16, ®ex); + if (s) + result |= 32; + + /* REG_STARTEND was added to glibc on 2004-01-15. + Reject older versions. */ + if (! REG_STARTEND) + result |= 64; + +#if 0 + /* It would be nice to reject hosts whose regoff_t values are too + narrow (including glibc on hosts with 64-bit ptrdiff_t and + 32-bit int), but we should wait until glibc implements this + feature. Otherwise, support for equivalence classes and + multibyte collation symbols would always be broken except + when compiling --without-included-regex. */ + if (sizeof (regoff_t) < sizeof (ptrdiff_t) + || sizeof (regoff_t) < sizeof (ssize_t)) + result |= 64; +#endif + + return result; + ]])], [gl_cv_func_re_compile_pattern_working=yes], [gl_cv_func_re_compile_pattern_working=no], dnl When crosscompiling, assume it is not working. @@ -175,7 +230,10 @@ AC_DEFUN([gl_REGEX], esac if test $ac_use_included_regex = yes; then - AC_DEFINE([_REGEX_LARGE_OFFSETS], 1, + AC_DEFINE([_REGEX_INCLUDE_LIMITS_H], [1], + [Define if you want to include , so that it + consistently overrides 's RE_DUP_MAX.]) + AC_DEFINE([_REGEX_LARGE_OFFSETS], [1], [Define if you want regoff_t to be at least as wide POSIX requires.]) AC_DEFINE([re_syntax_options], [rpl_re_syntax_options], [Define to rpl_re_syntax_options if the replacement should be used.]) @@ -207,8 +265,6 @@ AC_DEFUN([gl_REGEX], [Define to rpl_regerror if the replacement should be used.]) AC_DEFINE([regfree], [rpl_regfree], [Define to rpl_regfree if the replacement should be used.]) - AC_LIBOBJ([regex]) - gl_PREREQ_REGEX fi ]) @@ -216,8 +272,12 @@ AC_DEFUN([gl_REGEX], AC_DEFUN([gl_PREREQ_REGEX], [ AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) + AC_REQUIRE([AC_C_INLINE]) AC_REQUIRE([AC_C_RESTRICT]) AC_REQUIRE([AC_TYPE_MBSTATE_T]) - AC_CHECK_FUNCS_ONCE([isblank iswctype mbrtowc wcrtomb wcscoll]) - AC_CHECK_DECLS([isblank], [], [], [#include ]) + AC_REQUIRE([gl_EEMALLOC]) + AC_REQUIRE([gl_GLIBC21]) + AC_CHECK_HEADERS([libintl.h]) + AC_CHECK_FUNCS_ONCE([isblank iswctype]) + AC_CHECK_DECLS([isblank], [], [], [[#include ]]) ])